Improvement in stove-grates



P. D. BECKWITH. Stove-Grate.

No. 206,074. Patented .luly1y6 1878.

UNITED STATES PATENT OEEICE.

PHIL() D. BECKWITH, OF DOVVAGIAC, MICHIGA.

IM PROVEM ENT IN STOVE-GRATES.

Specification forming part of Letters Patent N0. 206,074, dated July 16,1978, application filed June 13, 1878.

To all whom 'it may concern..-

Be it known that I, PHILO D. BECKWITH, of Dowagiac, Cass county, Stateof Michigan, have invented a new and useful Improvement in Stove-Cratesfor Wood-Burning Stoves, which improvement is fully set forth in thefollowing specification and accompanying drawings, in which- Figure 1 isa top view of my improved grate. Fig. 2 is a bottom view of the same,and Fig. 3 a vertical section in the line a; x of Fig. 2.

My grate is specially1 designed for use in connection with my Round OakStoves,7 heretofore patented, in which wood is principally burned,though coal or coke may be burned in them.

The nature of my invention consists in a movable grate provided withsupporting-lugs, and made with an increased thickness on the front sideof its center, so that it will have sufficient rigidity and' strength towithstand the intenser heat which comes upon it at this point, and isthinned down in rear of its center and stayed at its middle and near itsmargin by ribs, said grate having openings through its thicker frontportion, but none in its thinner rear portion. By this part ofv myinvention the ashes and cinders can be moved back beyond the gratedsurface upon the plain or closed portion of the grate, where they willbe retained better, and the re kept during the night from the inliuenceof the draft, while at the same time a grate is provided which isdurable in that part where required to withstand great heat, and, foreconomy of metal and cheapness of manufacture, is made light and stayedwith ribs where it is liable to become warped.

My invention also consists in providing short grate-bars or teeth whichcorrespond to short portions of the bars on the circumference of thethicker part of the grate, whereby the draft is increased, andfacilities for ashes and other objects to fall down between the front ofthe grate and the body of the stove are afforded.

In the accompanying drawin gs, A is the grate proper, made with a closedportion, B, and

open portions C and D. 0n each side and at the rear of this grate lugs aare provided, by

means of which the grate can be hung in a stove, so as to be dumpedvertically and vibrated horizontally, if desired. The grated portion Cof the grate proper, A, is made to occupy nearly one-half of the area ofthe casting, and is entirely in front of the transverse center of thegrate, while the closed portion is in rear of this grated or opensurface, and occupies the remainder of the casting. Between the gratedfront ends of the bars forming the surface C and the short teeth orsections of bars D a solid body of metal of semicircular form isprovided, in order to unite the bars C and D transversely andlongitudinally, and form a firm support for said bars. Under the grateproper, A, a transverse curved rib, b, is formed between the rear endsof the bars C and the closed portion B, which rib extends down below thebars some distance, so as to serve as a firm stay against warping.Around the under side of the closed portion B of the grate, near themargin, a semicircular rib, c, is provided, which rib unites with therib b near its ends, as shown.

The bars C and short sections of bars D are made of a depth much greaterthan the thickness of the closed portion B of the grate, in order thatthey may be strong and durable enough to withstand the strain and heatwhich necessarily comes upon them. The portion B of the grate, beingclosed and not being required to be subjected to the direct influence ofthe draft and to an intense burning heat, such as is experienced in thefront part of the grate, where the draft is concentrated by reason of mypeculiar construction of the grate, is made quite thin, in order to saveexpense in its manufacture; and in order to prevent this thin, broad,closed portion B from warping, by reason of the grated portion C D beingintensely heated while the portion B is only moderately heated, the ribsb c are provided, as shown.

Having described my invention, what I claim is 1. The grate consistingof the closed or solid part B, made thin and strengthened by ribs,

and the thick open part substantially ns VVtIiQss my hand this 6th dayof June, A. D.

and for the purpose described. 1878, in matter of my application for apatent 2. The movable grate stayed by ribs, as deon improvedstove-grate.

scribed7 and provided with the closed surfaee PHIL() D. BECK\VITII.

B back of its center, and with the open snr- 'itnesses:

face C and toothed periphery l), snbstnnti-.illy J. MosHER,

:1s described. E. U. ADAMS.

